Deutzia plant named ‘Kolmaspri’

ABSTRACT

A new and distinct cultivar of  Deutzia  plant named ‘Kolmaspri’, characterized by its upright plant habit; strong and erect flowering stems; freely flowering habit; white-colored flowers; and good garden performance.

Botanical designation: Deutzia×hybrida.

Cultivar denomination: ‘KOLMASPRI’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Deutzia plant, botanically known as Deutzia×hybrida and hereinafter referred to by the name ‘Kolmaspri’.

The new Deutzia plant is a product of a planned breeding program conducted by the Inventor in Boskoop, The Netherlands. The objective of the breeding program is to create new Deutzia cultivars with strong and upright flowering stems and freely flowering habit.

The new Deutzia plant originated from a open-pollination in Boskoop, The Netherlands in 1999 of Deutzia×hybrida ‘Mont Rose’, not patented, as the female, or seed, parent with an unknown selection of Deutzia×hybrida as the male, or pollen, parent. The new Deutzia was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination in a controlled environment in Boskoop, The Netherlands in 2004.

Asexual reproduction of the new Deutzia plant by cuttings in a controlled environment in Boskoop, The Netherlands since 2004, has shown that the unique features of this new Deutzia plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Deutzia have not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment and cultural practices such as temperature and light intensity without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Kolmaspri’. These characteristics in combination distinguish ‘Kolmaspri’ as a new and distinct cultivar of Deutzia:

-   -   1. Upright plant habit.     -   2. Strong and erect flowering stems.     -   3. Freely flowering habit.     -   4. White-colored flowers.     -   5. Good garden performance.

Plants of the new Deutzia differ primarily from plants of the female parent, ‘Mont Rose’, in the following characteristics:

-   -   1. Plants of the new Deutzia have stronger and more erect         flowering stems than plants of ‘Mont Rose’.     -   2. Plants of the new Deutzia have shorter flowering stems than         plants of ‘Mont Rose’.     -   3. Plants of the new Deutzia are more freely flowering than         plants of ‘Mont Rose’.     -   4. Plants of the new Deutzia and ‘Mont Rose’ differ in flower         color as plants of ‘Mont Rose’ have pink-colored flowers.

Plants of the new Deutzia can also be compared to plants of Deutzia longifolia ‘Veitchii’, not patented. In side-by-side comparisons conducted in Boskoop, The Netherlands, plants of the new Deutzia and ‘Veitchii’ differed primarily in the following characteristics:

-   -   1. Plants of the new Deutzia have stronger and more erect         flowering stems than plants of ‘Veitchii’.     -   2. Plants of the new Deutzia have smaller and lighter         green-colored leaves than plants of ‘Veitchii’.     -   3. Plants of the new Deutzia and ‘Veitchii’ differ in flower         color as plants of ‘Veitchii’ have pink-colored flowers.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Deutzia, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Deutzia.

The photograph on the first sheet comprises a side perspective view of a typical plant of ‘Kolmaspri’ grown in an outdoor nursery.

The photograph on the second sheet is a close-up view of typical inflorescences of ‘Kolmaspri’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown in Boskoop, The Netherlands, under commercial practice during the spring in an outdoor nursery. During the production of the plants, day temperatures ranged from 14° C. to 25° C. and night temperatures ranged from 7° C. to 17° C. Plants had been growing for three years when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2007 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Deutzia×hybrida ‘Kolmaspri’. -   Parentage:     -   -   Female, or seed, parent.—Deutzia×hybrida ‘Mont Rose’, not             patented.         -   Male, or pollen, parent.—Unknown selection of             Deutzia×hybrida, not patented. -   Propagation:     -   -   Type.—By cuttings.         -   Time to initiate roots.—About two weeks at 15° C. to 30° C.         -   Time to produce a rooted young plant.—About six months at             15° C. to 30° C.         -   Root description.—Fibrous, medium in thickness; creamy white             in color.         -   Rooting habit.—Moderate branching; moderately dense. -   Plant description:     -   -   Plant form/habit.—Upright plant habit; strong and erect             flowering stems; moderately vigorous to vigorous growth             habit.         -   Branching habit.—Freely branching habit with about 33             lateral branches developing per plant.         -   Plant height.—About 99.7 cm.         -   Plant width (spread).—About 117 cm.         -   Primary lateral branches.—Length: About 99 cm. Diameter:             About 5 mm. Internode length: About 2.2 cm. Strength:             Strong. Texture, developing: Densely pubescent. Texture,             developed: Woody. Color, developing: Close to 137C to 137D.             Color, developed: Between 199D to 200D. -   Foliage description:     -   -   Arrangement.—Opposite, simple.         -   Length, largest leaves.—About 10.3 cm.         -   Width, largest leaves.—About 3.7 cm.         -   Shape.—Narrowly ovate.         -   Apex.—Acute.         -   Base.—Obtuse.         -   Margin.—Serrate.         -   Texture, upper and lower surfaces.—Pubescent; rugose.         -   Venation pattern.—Pinnate.         -   Color.—Developing leaves, upper surface: Close to 137B.             Developing leaves, lower surface: Close to 191A to 191B.             Fully expanded leaves, upper surface: Close to 137A to 137B;             venation, close to 144B to 144C. Fully expanded leaves,             lower surface: Close to 138A to 138B; venation, close to             148A.         -   Petioles.—Length: About 7 mm. Diameter: About 3 mm. Texture,             upper and lower surfaces: Pubescent. Color, upper and lower             surfaces: Close to 144A to 144B. -   Flower description:     -   -   Flower type/habit.—Single rotate flowers arranged in             terminal thyrsus; flowers face mostly outwardly. Thyrsus             roughly conical in shape. Freely flowering habit with about             40 flowers per inflorescence.         -   Fragrance.—Faintly fragrant; sweet and pleasant.         -   Natural flowering season.—Continuously flowering during the             late spring in The Netherlands.         -   Postproduction longevity.—Flowers last about six days on the             plant; flowers last about six days as a cut flower; flowers             not persistent.         -   Flower buds.—Height: About 8 mm. Diameter: About 5.5 mm.             Shape: Oblong. Color: Close to 155C.         -   Inflorescence height: About 8.6 cm.         -   Inflorescence diameter: About 5.2 cm.         -   Flower diameter: About 2.3 cm.         -   Flower depth: About 1.6 cm.         -   Petals.—Quantity per flower: Typically five in a single             whorl. Length: About 1.3 cm. Width: About 6 mm. Shape:             Elliptic. Apex: Broadly acute. Margin: Entire. Texture,             upper and lower surfaces: Smooth, glabrous. Color:             Developing petals, upper and lower surfaces: Close to 155C.             Fully expanded petals, upper and lower surfaces: Close to             NN155D.         -   Sepals.—Quantity per flower: Typically five in a single             whorl, fused towards the base; calyx campanulate. Length:             About 2.5 mm. Width: About 1.5 mm. Shape: Ovate. Apex:             Acute. Margin: Entire. Texture, upper and lower surfaces:             Smooth, glabrous. Color: Developing and fully expanded             sepals, upper surface: Close to 144B. Developing and fully             expanded sepals, lower surface: Close to 138B.         -   Peduncles.—Length: About 7.2 cm. Diameter: About 1 mm.             Strength: Moderately strong. Texture: Smooth, glabrous.             Color: Close to 152A.         -   Pedicels.—Length: About 4 mm. Diameter: About 0.75 mm.             Strength: Moderately strong. Texture: Smooth, glabrous.             Color: Close to 152A.         -   Reproductive organs.—Stamens: Quantity per flower: Typically             ten. Filament length: About 9 mm. Filament color: Close to             NN155D. Anther shape: Circular, flattened. Anther length:             About 1 mm. Anther color: Close to 11A. Pollen amount:             Abundant. Pollen color: Close to 14B. Pistils: Quantity per             flower: Three. Pistil length: About 1.3 cm. Stigma shape:             Club-shaped, narrow. Stigma color: Close to N144A. Style             length: About 1.2 cm. Style color: Close to 145C to 145D.             Ovary color: Close to N138C.         -   Seed/fruit.—Seed and fruit development have not been             observed. -   Disease/pest resistance: Plants of the new Deutzia have not been     observed to be resistant to pathogens or pests common to Deutzia. -   Garden performance: Plants of the new Deutzia have been observed to     have good garden performance and tolerate rain, wind and     temperatures ranging from about −20° C. to about 40° C. 

1. A new and distinct Deutzia plant named ‘Kolmaspri’ as illustrated and described. 